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An isosceles triangle, in which the length of two sides are 5 / 3 decimeter and 4 / 1 decimeter respectively, calculate the perimeter
When waist length = 3 / 5 decimeter, circumference = 3 / 5 × 2 + 1 / 4 = 1.45 decimeter
Waist length = 1 / 4 decimeter, can not form a triangle, so give up
An isosceles triangle in which the lengths of two sides are 2 / 3M and 1 / 4m respectively. Find the perimeter of the triangle
Because it is an isosceles triangle, and according to the sum of the two sides of the triangle is greater than the third, the length of the three sides is as follows:
（1） 2/3,2/3,1/4
(2) 1 / 4,1 / 4,2 / 3 (the sum of two sides is less than the third side)
So the perimeter of the triangle is 2 / 3 + 2 / 3 + 1 / 4 = 19 / 12
For an isosceles triangle, it is known that the lengths of its two sides are 7 / 8 meters and 2 / 5 meters respectively. What is the circumference of the triangle?
From the meaning of the title:
1. When the waist length is 2 / 5 meters and the bottom edge is 7 / 8 meters,
If the sum of the two sides is less than the third side, it will not form a triangle
2. When the bottom edge is 2 / 5 meters, the waist length is 7 / 8 meters
Perimeter = 2 / 5 + 7 / 8 × 2 = 43M / 20
A moment forever 523
If the median line of a waist of an isosceles triangle is known and the circumference of the triangle is divided into 20cm and 12cm, then the waist length of the isosceles triangle is
Let the waist length be 2x and the bottom length be y
【1】 2X + y = 20; 3x = 12. If x = 4, the waist length is 8cm
【2】 If 2x + y = 12; 3x = 20, then x = 20 / 3, 2x = 40 / 3 > 12, then the equation has no solution
Therefore, the waist length of isosceles triangle is 8cm
It is known that the circumference of an isosceles triangle is 20cm. If the waist is twice the base length, find the length of each side. Can one side of the isosceles triangle be 4cm long? Why
If the base length is x, the waist length is 2x
x+2x+2x=20
5x=20
x=4
The bottom length is 4
The circumference of an isosceles triangle is 20cm, and the difference between the circumference of the two triangles obtained by dividing the middle line on one waist is 4cm
The perimeter difference between the two triangles is actually the difference between the waist and the bottom
Let the waist be a and the bottom be B
Then 2A + B = 20
A-B = 4 or B-A = 4
The solution is a = 8, B = 4
Or a = 16 / 3, B = 28 / 3
The perimeter of an isosceles triangle is 20cm. If the perimeter is divided into two parts of 3:2 by the middle line of a waist, the base length of the isosceles triangle is 20cm______
Let the waist be 2a and the bottom be c
2a+2a+c=20
(a+a+c)/(a+a)=3/2
You can solve the equation
2a=8
c=4
The length of the bottom edge of an isosceles triangle is 7cm. The middle line of a waist divides its circumference into two parts with a difference of 5cm. Find the waist length of this isosceles triangle [I hope it can be made of paper, so I have to make it myself]
wait
The circumference of an isosceles triangle is 10cm, one side is 4cm, and the other sides are calculated
Do it in two ways, not equations, but numbers
A:
The circumference of isosceles triangle is 10 cm
1) If the waist length is 4cm, the bottom edge is 10-4-4 = 2cm
2) If the base length is 4cm, the waist length = (10-4) / 2 = 3cm
So: the side length of an isosceles triangle is 4,4,2 or 3,3,4
So: the other two sides are 4cm, 2cm or 3cm, 3cm
If one side of an isosceles triangle is 10 cm long and the other side is 8 cm long, what is its perimeter
10 + 8 + 8 = 26 or 10 + 10 + 8 = 28
RELATED INFORMATIONS
- 1. It is known that the waist length of an isosceles triangle is 3 / 4 of the length of its base, and the length of one side is 11cm, then its circumference is_____________ .
- 2. If the vertex angle of an isosceles triangle is known to be 40 degrees, then the angle between the height of its waist and the bottom is 40 degrees______ ．
- 3. If the acute angle between the heights of the two waists of an isosceles triangle is 70 degrees, what are the degrees of the three internal angles of an isosceles triangle?
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- 15. Be sure to see a reward. Pick up an isosceles triangle with a waist length of 10cm on a rectangular cardboard with a length of 17cm and a width of 16cm Very important, please answer with conscience! (one vertex of triangle and one vertex of rectangle are required to coincide, and the other two vertices are on the side length of rectangle). Please draw a figure or use words to show the detailed drawing process and find the method of drawing acute angle
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